Sonic the Hedgehog and his pals are ready to jump onto their airboards - customised for their own unique talents -and rise to a heavyweight challenge from their archenemy Dr Eggman. The evil doctor has challenged the racers to compete in a tough Worldwide Grand Prix, with the prize an ultra-rare Chaos Emerald. Scorch across a range of wild locations from the Sonic universe, pulling extraordinary tricks and stunts all the way, trying to seize the emerald from the clutches of Dr Eggman and his renowned gang of riders, the Band of Thieves: Babylon.